Added instructions for .well-known method (supersedes #887) (#979)
* Added instructions for .well-known method
* Factor out SelectableBtn
* Rework the ChangeHandle modal to be a little clearer
* Fix lint
* Fix desktop layout
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Co-authored-by: Haider Ali Punjabi <haiderali@cyberservices.com>
Co-authored-by: Haider Ali Punjabi <haideralipunjabi@hackesta.org>
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